9632.pmd Installation Directions

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TASKMASTER
5100 SERIES

INSTALLATION
INSTRUCTIONS
& PARTS LIST

Horizontal or Vertical Mounting
Industrial / Commercial
Unit Heater

ATTENTION: Read carefully before attempting to install,
operate or service the TaskMaster Unit Heater. Retain
these installation instructions for future use.
PRODUCT FEATURES
Forced air electric unit heater available in 208, 240/208,
227, 480, 550 or 600 volt as standard.
Ten standard heating capacities of 3.3 KW/11,260 BTUH
thru 50.0 KW/170, 600 BTUH.
208 and 240/208 volt models are single phase field
convertible to three phase on 3.3 thru 10.0 KW Models.
(Single phase only available on 3.3, 5.0, 7.5 and 10 KW
277 volt models.
Specially designed inlet louver allows the fan to pull cool
air evenly across the high mass all-steel element.
Outward drawn venturi and adjustable louver assembly
further directs the outlet air in a uniform pattern to meet
specific air pattern requirements in either the horizontal
or vertical mounting position.
Optional wall/ceiling or vertical mounting brackets (as
required).

Four position weld nuts supplied in case top and back
for field mounting by threaded rods or eye bolt with chain.
(Hardware supplied by others).
Optional radial or anemostat diffusers lending air pattern
versatility when mounted vertically.
Modular control kits for field installation. Disconnect
switch, thermostat, summer fan switch, heat recovery
thermostat. All kits with spade terminals (Except
disconnect switch).
Single point terminal board wiring of integral control kits.
24 volt low voltage control circuit standard on all
contactor and transformer models.
Roomy control box with access door locked into position
by two (2) 1/4 turn fasteners for ease of installation.
Revised 10/09
ECO 1-6174
Form 9632

IMPORTANT: OWNER SHOULD RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE

PROPER LOCATION INSTRUCTIONS

GENERAL SAFETY INFORMATION / CAUTION:

Once the total heating load is calculated, the quantity and
capacity of the unit heaters must be determined. because a
large number of low-capacity heaters provides more uniform
heat distribution. This approach is recommended when the
area will be occupied by a relatively large number of sedentary personnel, (i.e. working on production lines and at
benches.)

Follow all local electrical and safety codes, as well as the
National Electrical Code (NEC) and the Occupational
Safety and Health Act (OSHA).

A large number of smaller capacity unit heaters tends to
prevent hot drafts, reduces noise levels, and increases
diversity of load to help reduce electrical demand and
operating costs.

If the power disconnect is not integral and is out-of-sight,
lock it in the open position and tag to prevent unexpected
application of power prior to performing any service or
maintenance of the unit.

In warehouses where even heat distribution and constant
temperatures are less important, a smaller number of high
capacity units can be used -- in many cases reducing
installation cost. To maintain reasonable heat distribution
and reduce severe stratification even in lower bay areas, the
total air volume of the space should pass through the unit
heaters about three times per hour. (Take total cubic feet
and divide by 20 in order to determine proper total heater
CFM rating.)

The unit when installed must be electrically grounded in
accordance with the National Electrical Code and standard industry practice.

It is important that the rated voltage of the heating equipment match the supply voltage. Supply voltage in excess of
the heater rated voltage can damage equipment. Supply
voltage lower than the rated heater voltage will decrease
heater output as well as run the risk of damaging some
components.
Horizontal unit heaters are recommended in low bay areas
with maximum 15 to 18 foot ceilings. These should be
concentrated along outside wall or other areas of greatest
heat loss; spaced to set up a generally circular air movement, each heater supporting the air stream of the other.
Additional vertical down below unit heaters with appropriate
accessory diffusers can be located to counteract ceiling
heat losses (see Figure 1 Location charts).

To avoid possible electrical shock, be sure the electrical
current is turned off at the main switch prior to wiring or
servicing of unit.

Make certain that the power source conforms to the
requirements of your equipment. See Table 2 on page 6
for wire and circuit size
Check heater voltage and phase on rating label to confirm
that it matches the electric service supply.
Wiring diagrams of the heater and supply connections are
permanently attached to the inside of the heater access
door. All terminals are coded in accordance with the
wiring diagram. Accessory wiring are shown on the unit
wiring diagram and supporting literature.
The heater must be mounted at least 7’ above the floor to
prevent accidental contact with the fan blade which could
cause injury. Install unit so there are no obstructions to the
intake or discharge. Maintain clearances as shown on
Table 1, 2, Fig. 1 & 2.
The wall/ceiling mounting structure and anchoring provisions must be on sufficient strength to support the combined weight of the heater and mounting bracket.

Figure 1 Location Instructions
H

H

H

V

V

H

H
H

H

H

H

H

H

EXPOSED
H

H

2

H

H

PRINCIPLES OF OPERATION
Upon a call for heat from the floor level or unit mounted
optional accessory thermostat, the unit fan motor and
heating elements shall be energized and remain ON until
temperature reaches setting of thermostat; at which time
the heating elements shall be deenergized.

When the unit mounted stratification thermostat closes on
a temperature rise and at the same time the floor thermostat calls for heat, the motor shall be energized immediately and the heating element shall be energized, as
previously described.

The fan motor shall continue to run and purge heater
casing of residual heat until setting of fan override is
reached, then the fan motor shall be deenergized.

The automatic reset safety high limit shall deenergize the
heating elements and control circuits should the temperature exceed the setting of this device. The fan safety
override shall energize fan motor any time the setting of
this device is exceeded so as to purge heater casing of
excess residual heat.

For those units with a factory installed two speed fan
switch (25-50KW), the unit as shipped from the factory is
set to “low” speed. Customer option to set to “high” speed.
For those units available with subdivided circuits, the
accessory two stage thermostat (optional) will, upon a call
for heat, energize fan motor and the first stage heating
element. Should temperature continue to fall, the thermostat shall energize the second stage heating element.
Upon a rise in space conditions towards setting of the
thermostat, the two stages of heating elements shall be
deenergized in reverse sequence.
The fan motor shall continue to run and purge heater
casing of residual heat until setting of fan override is
reached, then the fan motor shall be deenergized.
The accessory unit mounted stratification thermostat will
energize the unit heater fan motor upon a rise in
temperature above its setting.

When the accessory fan switch is placed in the ON position
(for summer air circulation), the unit heater fan motor shall
be energized.
NOTE: The wall thermostat is to be set to the OFF position
during this mode of operation (units with contactors).
For those accessory thermostats equipped with an integral
fan switch, place the switch in the HEAT, or AUTO position
for operation of the fan and elements which shall then be
under control of the thermostat as described above.
When switch is placed in the OFF position, the unit shall be
deenergized. When switch is placed in the FAN position,
elements shall be deenergized and fan shall be immediately energized.

VERTICAL DISCHARGE UNITS - AIR PATTERNS

General Distribution
(No Diffuser)

Louver Diffuser (Standard)

Anemostat Diffuser
(Optional)

Radial Diffuser (Optional)

TABLE 1
USED
ON
3.3 & 5.0 KW
7.5 & 10.0 KW
15.0 & 20.0 KW
25.0 & 30.0 KW
40.0 & 50.0 KW
STD = Standard

MAX
MTG
HT.

A

9
12
18
22
24

20
40
52
75
84

B

10
22
30
42
47

STOCK
NO.
STD
STD
STD
STD
STD

MAX
MTG
HT.

A

9
12
18
22
24

15
30
40
55
64

MAX
MTG
HT.

A

-10
15
17
20

-30
38
50
60

STOCK
NO.
N/A
AD5120
AD5120
AD5150
AD5150

STOCK
NO.
N/A
RD5120
RD5120
RD5150
RD5150

MAX MTG HT.

A

45O

OPEN

45O

OPEN

-0
14
20
18

-14
21
30
28

-36
42
62
68

-30
35
44
54

N/A = Not Applicable

Optional diffusers lend added air pattern versatility to
individual vertical down blow installations as shown in
above illustations.
3

INSTALLATION INSTRUCTIONS
TASKMASTER -- 5100 SERIES UNIT HEATER
ATTENTION: READ INSTRUCTION CAREFULLY
All electric unit heaters are shipped fully assembled.
Installation includes hanging the unit, mounting the built-in
and remote accessories, wiring of optional control devices,
and electrical wiring to the unit.

Heaters may be mounted in the horizontal or vertical air
discharge configuration using factory optional supplied
accessory mounting equipment or using special hardware
facilities supplied by others.

To insure proper delivery of the heated air to desired areas,
follow the mounting height and air projection tables include
in these instructions. Follow Fig. 1 & 2 for minimum wall
and ceiling clearances.

After the installation is complete, replace the access panel.
Set the controls (thermostat, switch) at their desired
control point and apply power to the unit.
Check correct operation.
DIMENSIONS

FIG. 1
HORIZONTAL DISCHARGE

FIG. 2
VERTICAL DISCHARGE

DIMENSIONS (INCHES)
The wall and/or ceiling structure must be sufficient to
support the combined weight of the heater and any mounting bracket and accessories.

KW
3.3 - 5.0
7.5 - 10.0
15.0 - 20.0
25.0 - 50.0

Be sure power source is deenergized before installing
heater. Check heater voltage and phase listed on heater
date tape on back of unit to make sure they are the same
as the electrical service supplied.

H
17-3/4
24-5/16
28-11/16
34

W
14-15/32
21-1/2
21-1/2
29-1/4

3.3 - 5.0 KW

D
6-1/2
6-1/2
6-1/2
10-1/16

7.5 - 20 KW

Certain units are convertable from single to three phase
service. Follow instructions noted on the unit wiring diagram for this conversion. Units that carry a dual voltage
rating (HF) require specific wiring changes when converting
from 240 to 208 volt service supplied.
(4) 5/16" K.O.

Open the access panel (2 1/4 turn fasteners).

9/16" K.O.

9/16" K.O.

Remove the desired knock-out(s) on back of the heater.

(4) 5/16" K.O.

9/16" K.O.
1/2" K.O.

3/4" - 1" K.O.
3/4" K.O.

1/2" K.O.

1/2" - 3/4" K.O.
9/16" K.O.

Install any optional accessories following their installation
instructions before mounting unit. Following the correct
unit/accessory wiring diagram, connect the power supply,
electrical ground and accessories to the correct terminals
or termination points using accepted practices.

vertical discharge
* For
mounting bracket
Diagrams not to scale

NET JUNCTION BOX VOLUME
KW

4

3.3 - 5
7.5 - 10
15.0 - 20
25.0 - 50

CUBIC INCHES
74.4
198
198
341

CC
1219
3245
3245
5592

9/16" K.O.

INSTALLATION INSTRUCTIONS
TASKMASTER -- 5100 SERIES UNIT HEATER (part 2)
HORIZONTAL -- AIR DISCHARGE MOUNTING
SHOWN IN: FIGURE 5 & 6

VERTICAL -- AIR DISCHARGE MOUNTING
SHOWN IN: FIGURE 7

Swivel hanger brackets may be used to suspend unit
heaters from either the wall (figure 5) or the ceiling
(figure 6). Attach hanger base “A” to top of heater with
the four 5/16 X 18 caps screws and lockwashers (provided in envelope).

Attach short angle brackets “A” to back of heater with
four 5/16 X 18 capscrews “B”, lockwashers “F”. Be sure
vertical leg of angle brackets face top and bottom of
heater.

Attach main hanger frame “B” to wall or ceiling in
desired location using lag screws “C” or other suitable
attachments (supplied by others).
Lift heater into position inserting stud “D” through hole
in main hanger frame and attach lock nut “provided in
envelope) “E” tightening to within two turns of being
tight.
Swivel heater to desired position, tighten lock nut.

Figure 5
WALL MOUNT
HORIZONTAL DISCHARGE

Attach inverted U frames “D” to short angle brackets
with four 5/16 X 18 capscrews “K”, washers “L”,
lockwashers “M” and nuts “N”.
Attach long angle brackets “J” to inverted frames “D”
with four 5/16 X 18 capscrews “K”, washers “L”,
lockwashers “M” and nuts “N”.
Attach heater and bracket assembly to ceiling in
desired location using customer supplied equipment
sufficient to support the assembly.

Figure 7
CEILING MOUNT
VERTICAL DISCHARGE

Figure 6
CEILING MOUNT
HORIZONTAL DISCHARGE

NOTE: When mounting heater using 5/16” all thread
rod (by others) do not screw the rod more than 1/2”
beyond the inside of the case.

5

5100 SERIES UNIT HEATER
ELECTRICAL DATA (Table 2)
CATALOG
NUMBER

KW
RATING

BTU/HR
(000)

HEATER /
MOTOR
VOLTAGE

HEATER
PHASE

CONTROL
VOLTAGE

AMPS
PER
PHASE

BRANCH CIRCUIT
PROTECTION
SIZE(A)

SUPPLY WIRE
SIZE 60o C
AWG **

3.3
3.3

11.2
11.2

3.3/2.5
3.3/2.5

11.2/8.5
11.2/8.5

3.3
3.3
5.0
5.0
5.0

11.2
11.2
17.1
17.1
17.1

5.0/3.7
5.0/3.7

17.1/12.8
17.1/12.8

5.0
5.0
7.5

17.1
17.1
25.6

HF2B5107CA1

7.5/5.6

25.6/19.2

G1G5107CA1
P3P5107CA1

7.5
7.5

25.6
25.6

HF2B5110CA1

10.0/7.5

34.1/25.6

G1G511OCA1
P3P5110CA1
F3F5115CA1
HF3B5115CA1
P3P5115CA1
HF3B5120CA1
P3P5120CA1
F3F5125CA1
HF3B512CA1
P3P5125
F3F5130CA1
HB3B5130CA1
P3P5130CA1
F3F5140CA1
HF3B5140CA1
P3P5140CA1
F3F5150CA1
HF3BB5150CA1
P3P5150CA1
U3H5105CA4***
U3H5107CA4
U3H5110CA4
U3H5115
U3H5120CA4
U3H5125CA4
U3H5130CA4
U3H5140CA4
U3H5150CA4
T3H5105CA4N
T3H5107CA4N
T3H5110CA4N
T3H5115CA4N
TEH5120CA4N
T3T5125CA1N
T3T5130CA1N
T3T5140CA1N
T3T5150CA1N

10.0
10.0
15.0
15.0/11.2
15.0
19.5/14.6
20.0
25.0
25.0/18.7
25.0
30.0
30.0/22.5
30.0
40.0
40.0/30.0
39.0
49.6
50.0/37.5
50.0
5.0
7.5
10.0
15.0
20.0
25.0
30.0
40.0
50.0
5.0
7.5
10.0
15.0
20.0
25.0
30.0
40.0
50.0

34.1
34.1
51.2
51.2/38.4
51.2
67.2/50.5
68.3
83.3
85.3/64.0
85.3
102.4
102.4/76.8
102.4
136.5
136.5/102.4
133.1
169.9
170.6/128.0
170.6
17.1
25.6
34.1
51.2
68.3
85.3
102.4
136.5
170.0
17.1
25.6
33.8
51.2
68.3
85.3
102.4
136.5
170.6

208
208
208
240/208
240/208
240/208
277
480
208
208
208
208
240/208
240/208
240/208
277
480
208
208
240/208
240/208
277
480
208
240/208
240/208
277
480
208
240/208
480
240/208
480
208
240/208
480
208
240/208
480
208
240/208
480
208
240/208
480
600/240
600/240
600/240
600/240
600/240
600/240
600/240
600/240
600/240
550/240
550/240
550/240
550/240
550/240
550
550
550
550

1
1
3
1
1
3
1
3
3
1
1
1
1
1
3
1
3
1
3
1
3
1
3
3
1
3
1
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3

208
208
208
240/208
240/208
240/208
277
24
208
208
208
208
240/208
240/208
240/208
277
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
240
240
240
240
240
240
240
240
240
240
240
240
240
240
24
24
24
24

15.9
15.9
9.2
13.7/11.9
13.7/11.9
7.9/6.9
11.9
4
24.1
24.1
24.1
24.
20.9/18.1
20.9/18.1
12.1/10.4
18.1
6.1
36.1
20.8
31.3/27.1
18.1/15.6
27.1
9.1
27.8
41.6/36.1
24/20.8
36.1
12.1
41.7
36.1/31/3
18.1
47.8/41.1
24.1
69.5
60.2/52.1
30.1
83.4
72.3/62.5
36.2
111.2
96.4/83.4
47
139
120.5/104.3
60.3
5.1
7.7
10.2
15.5
20.3
24.5
29.4
39.8
49.4
5.25
7.88
10.5
15.76
21.1
26.3
31.5
42
52.55

20
20
15
20/15
20/15
10/10
15
15
35
35
35
35
30/25
30.25
20/15
25
15
50
30
40/35
25/20
35
15
35
60/50
30/30
50
20
60
50/40
25
60/60
35
90
80/70
40
110
100/80
50
150
124/110
60
175
175/150
80
15
15
15
20
25
35
40
50
60
15
15
15
20
30
35
40
60
70

12
12
14
12/14
12/14
14/14
14
14
8
8
8
8
10/10
10/10
12/14
10
14
6
10
8/8
10/12
8
14
8
4/6
8/10
6
12
4
6/8
10
4/6
8
2
3/4
8
2*
2/3
6
1/0*
1*/2*
4
2/0*
2/0* 1/0*
3
14
14
14
12
10
8
8
6
4
14
14
14
12
10
8
8
4
4

F1F5130
F2F5130
HF1B5103
HF2B5103
G1G5103
P3P5103CA1
F1F5105
F2F5105
F2F5105
HF1B5105
HF2B5105
G1G5105
P3P5105CA1
F2F5107CA1

* Use 75 degree C Wire

6

**Use Copper Conductors on all heaters

***This unit (only) built in 7.5 & 110KW case size.

5100 SERIES UNIT HEATER
AIR DELIVERY DATA
CFM at
OUTLET

400
400
400
400
400
400
400
400
400
400
400
400
700
700
700
700
700
700
700
700
700
1100
1100
1100
1100
1100
2000/1800
2000/1800
2000/1800
2000/1800
2000/1800
2000/1800
3100/2800
3100/2800
3100/2800
3100/2800
3100/2800
3100/2800
558
700
700
1100
1100
2000/1800
2000/1800
3100/2800
3100/2800
680
680
680
1080
1080
1980/1780
1980/1780
2900/2650
2900/2650

FPM at
OUTLET

1030
1030
1030
1030
1030
1030
1030
1030
1030
1030
1030
1030
1000
1000
1000
1000
1000
1000
1000
1000
1000
1580
1580
1580
1580
1580
1300/1100
1300/1100
1300/1100
1300/1100
1300/1100
1300/1100
2000/1800
2000/1800
2000/1800
2000/1800
2000/1800
2000/1800
929
1000
1000
1580
1580
1300/1100
1300/1100
2000/1800
2000/1800
971
971
971
1542
1542
1290/1150
1290/1150
1870/1160
1870/1160

FAN MOTOR DATA

TEMPETURE
RISE
o
F

HP

26
26
26
26
26
26
40
40
40
40
40
40
34
34
34
34
45
45
45
45
45
43
43
43
57
57
40/44
40/44
40/44
47/53
47/53
47/53
40/45
40/45
40/45
51/56
51/56
51/56
30
34
45
43
43
40/44
47/53
40/45
51/56
25.1
37.6
50.2
47.4
63.2
43/48
52/58
47/52
59/66

1/125
1/125
1/125
1/125
1/125
1/125
1/125
1/125
1/125
1/125
1/125
1/125
1/50
1/50
1/50
1/50
1/50
1/50
1/50
1/50
1/50
1/20
1/20
1/20
1/20
1/20
1/12
1/12
1/15
1/12
1/12
1/15
1/4
1/4
1/4
1/4
1/4
1/4
1/125
1/50
1/50
1/20
1/20
1/12
1/12
1/4
1/4
1/125
1/50
1/50
1/20
1/20
1/12
1/12
1/4
1/4

`

Motor
RPM

1550
1550
1550
1550
1550
1550
1550
1550
1550
1550
1550
1550
1550
1550
1550
1550
1550
1550
1550
1550
1550
1550
1550
1550
1550
1550
1550/1250
1550/1250
1550/1250
1550/1250
1550/1250
1550/1250
1550/1310
1550/1310
1550/1310
1550/1310
1550/1310
1550/1310
1300
1550
1550
1550
1550
1550/1250
1550/1250
1550/1310
1550/1310
1300
1550
1550
1550
1550
1550/125
1550/125
1550/131
1550/131

MAX. MTG
Horizontal

Vertical

9
9
9
9
9
9
9
9
9
9
9
9
10
10
10
10
10
10
10
10
10
11
11
11
11
11
12
12
12
12
12
12
15
15
15
15
15
15
9
10
10
11
11
12
12
15
15
9
10
10
11
12
12
12
15
15

9
9
9
9
9
9
9
9
9
9
9
9
12
12
12
12
14
14
14
14
14
20
20
20
20
20
22
22
22
20
20
20
25
25
25
22
22
22
9
12
14
20
20
22
22
25
22
9
12
14
20
18
22
20
25
22

AIR
THROW

WEIGHT
LBS.

12 Ft.
12 Ft.
12 Ft.
12 Ft.
12 Ft.
12 Ft.
12 Ft.
12 Ft.
12 Ft.
12 Ft.
12 Ft.
12 Ft.
22 Ft.
22 Ft.
22 Ft.
22 Ft.
22 Ft.
22 Ft.
22 Ft.
22 Ft.
22 Ft.
32 Ft.
32 Ft.
32 Ft.
32 Ft.
32 Ft.
45 Ft.
45 Ft.
45 Ft.
40 Ft.
40 Ft.
40 Ft.
55 Ft.
55 Ft.
55 Ft.
50 Ft.
50 Ft.
50 Ft.
12 Ft.
22 Ft.
22 Ft.
32 Ft.
32 Ft.
45 Ft.
40 Ft.
55 Ft.
50 Ft.
12 Ft.
22 Ft.
22 Ft.
32 Ft.
37 Ft.
45 Ft.
40 Ft.
55 Ft.
50

25
25
25
25
25
27
25
25
25
25
25
27
50
50
50
50
50
50
50
50
50
65
65
65
65
65
120
120
120
120
120
120
120
120
120
120
120
120
50
50
50
65
65
120
120
120
120
50
50
50
65
65
120
120
120
120

7

5100 SERIES UNIT HEATER
TROUBLE SHOOTING GUIDE
SYMPTOM

POSSIBLE CAUSE(S)

CORRECTIVE ACTION

Thermostat calls for
heat, but heater does
not function.

1. Open (blown) fuse

1. Replace fuses, check for cause.
(see Replacement Parts List for fuse size)

2. INCORRECT WIRING
2. CHECK WIRING CONNECTIONS
3. Thermal cut-out open,
deenergizing heater
element and control
circuit.

Fan motor runs
“HOT”

Fan motor runs,
but no heat.

3. Check for the following:
--- Correct supply volts and phase
--- Correct control wiring (heater control
must be thru thermostat control wiring
section only).
--- Power interruption to heater during
heater operation.
--- Restriction of air around heater 1-5
minute fan purge after thermostat off.

1. Dust accumulation or
excessive dirt on motor

1. Clean fan motor and casing of grease
and oil accumulation.

2. Dirt accumulation

2. Clean louvers and between heating
elements.

3. Motor needs lubrication.

3. See Maintenance.

1. Element contactor not
operating correctly.

1. Check wiring for open circuit. Replace
contactor if defective

2. Element fuse blown.

2. Replace fuses, check for cause. (see
Replacement Parts List for fuse size)

MAINTENANCE
CAUTION: Make certain that the power source is disconnected before attempting to service or disassemble any
componet. If the power disconnect is out of the line of sight, lock it in the OPEN position and tag to prevent the
application of power.
ELECTRICAL
Once a year inspect the control panel wiring to make certain insulation is intact and all connections are tight. Inspect
all heater and relay contacts. If the contacts appear badly pitted or burned, replace the contactor / relay.
CLEANING
Clean the unit casing, fan and motor once a year. A dirty motor will tend to run hot and eventually will be damaged
internally. Any rust spots on the casing should be cleaned and repainted.
LUBRICATION
All units up to 20KW have fan motors that are permanently lubricated so that only occasional cleaning is required.
Units above 20KW have fan motors lubricated for 5 years of continuous duty of 10 years of intermittent operations.
When required, remove the oil access plug on back of heater at motor intake grill, open oil cap, fill with S.A.E. No.
10 electric motor oil, replace plugs and access plug.
8

5100 SERIES UNIT HEATER
WIRING DIAGRAM SCHEDULE
DIAGRAM
NO.

MODEL CODE
PREFIX

MODEL CODE
SIZE AND CONTROL SYSTEM

WD5101
WD5104
WD5106
WD5113
WD5114
WD5138

WD5139
WD5140
WD5141
WD5142

FIF-GIG-HFIB
GIG
F2F-HF2B
F2F
HF2B
P3P
P3P
F3F
HF3B
F3F
F3F
HF3B
HF3B
P3P, T3T
P3P
P3P
U3H, T3H

WD5143

U3H

WD5144

T3T

5103N
5107CAIL
5103N
5107CAIL
5107CAIL
5103CAIL
5110CAIN
5115CAIL
5115CAIL
5125CAIL
5125CAIL
5125CAIL
5150CAIL
5125CAIN
5140CAIN
5150CAIN
5105CA4N
5115CA4N
5125CA4N
5150CA4N
5140CAIN

WD5121
WD5122
WD5125
WD5126

5105N
5110CAIL
5105N
5110CAIL
5110CAIL
5105CAIN
5115CAIN

5107CAIN
5120CAIN

5120CAIL
5130CAIL

5140CAIL

5130CAIL

5140CAIL

5130CAIN

5107CA4N
5120CA4N
5130CA4N

5110CA4N
5140CA4N

5150CAIN

9

5100 SERIES UNIT HEATER
PARTS LIST - CATALOG NUMBERS
HEATER
MODEL

F1F5103N
F25103N
HF1B5103N
HF2B5103N
G1G5103N
P3P5103CA1N
F1F5105N
F2F5105N
HF1B5105N
HF2B5105N
G1G5105N
P3P5105CA1N
F2F5107CA1L
HF2B5107CA1L
G1G5107CA1L
P3P5107CA1N
F2F5110CA1L
HF2B5110CA1L
G1G5110CA1L
P3P5110CA1N
F3F5115CA1L
HF3B5115CA1L
P3P5115CA1N
HF3B5120CA1L
P3P5120CA1N

HEATER
MODEL

MOTOR

ELEMENT
ASSEMBLY

AUTOMATIC
RESET

FAN
OVERRIDE

56562-012
56562-012
56562-017
56562-017
56562-016
56562-018
56562-012
56562-012
56562-017
56562-017
56562-016
56562-018
56823-011
56823-012
56824-002
56824-011
56823-011
56823-012
56824-002
56824-011
56825-001
56825-002
56825-003
56825-002
56825-003

60715-001
60715-011
60715-002
60715-012
60715-007
60715-008
60715-003
60715-004
60715-005
60715-006
60715-009
60715-010
56954-004
56954-006
56954-001
56954-002
56954-003
56954-004
56954-007
56954-008
56954-009
56954-010
56954-011
56954-012
56954-013

57640-006
57640-006
57604-006
57604-006
57604-006
57604-006
57604-006
57604-006
57604-006
57604-006
57604-006
57604-006
57604-003
57604-003
57604-003
57604-003
57604-003
57604-003
57604-003
57604-003
57604-004
57604-004
57604-004
57604-004
57604-004

28163-005
28163-005
28163-005
28163-005
28163-005
56811-001
28163-005
28163-005
28163-005
28163-005
28163-005
56811-001
56811-001
56811-001
56811-001
56811-001
56811-001
56811-001
56811-001
56811-001
56811-001
56811-001
56811-001
56811-003
56811-003

XFMR

60719-006

58027-041

60719-006
60719-001
60719-001
60719-005
60719-006
60719-001
60719-001
60719-005
60719-006
60719-001
60719-001
60719-006
60719-001
60719-006

58027-041
58027-031
58027-021
58027-021
58027-041
58027-036
58027-036
58027-031
58027-041
58027-036
58027-031
58027-041
58027-036
58027-041

MOTOR

ELEMENT
ASSY.

AUTO.
RESET

FAN
OVERRIDE

XFMR

S.D. FUSE
6 RQD

S.D. FUSE
2 RQD

56943-001
56943-002
56944-001
56943-001
56943-002
56944-001
56945-001
56945-002
56946-001
56945-001
56945-002
56946-001

56954-017
56954-018
56954-019
56954-020
56954-021
56954-022
56954-023
56954-024
56954-025
56954-026
56954-027
56954-028

57640-005
57640-005
57640-005
57640-005
57640-005
57640-005
57640-005
57640-005
57640-005
57640-005
57640-005
57640-005

56811-002
56811-002
56811-002
56811-002
56811-002
56811-002
56811-002
56811-002
56811-002
56811-003
56811-003
56811-003

60719-009
60719-009
60719-012
60719-009
60719-009
60719-012
60719-009
60719-009
60719-012
60719-009
60719-009
60719-012

50836-012
50836-012

41280-002
41280-007

50836-003
50836-012

41280-008
41280-002

50836-003
50836-003

41280-004
41280-003

50836-003
50836-003
57110-001

41280-005
41280-004
57111-008

KW

FAN
BLADE

TERMIAL
BOARD

GROUND
CONN.

MOTOR
CAPACITOR

3.3 - 5
7.5 - 10
15 - 20
25 - 30
40 - 50

56806-001
50551-002
56813-001
57114-001
57115-001

56809-001
56809-001
56809-001
56809-001
56809-001

1458
1458
1458
3981
3981

---57100-001
57100-001

F3F5125CA1L
HF3B5125CA1L
P3P512CA1N
F3F5130CA1L
HF3B5130CA1L
P3P5130CA1N
F3F5140CA1L
HF3B5140CA1L
P3P5140CA1N
F3F5150CA1L
HF3B5150CA1L
P3P5150CA1N

10

LOUVER

(5) 56986-001
(7) 56986-003
(7) 56986-003
(9) 56987-001
(9) 56987-001

Revised 3/91

CONTACTOR

POWER
TERMINAL
BLOCK
56815-001
56815-001
56815-001
56815-001
56815-001
56815-001
56815-001
56815-001
56815-001
56815-001
56815-001
56815-001
56815-001
56816-001
56815-001
56815-001
56816-001
56816-001
56816-001
56815-001
56816-001
56816-001
56815-001
56816-001
56815-001

CONTACTOR POWER
2 RQD
TERMINAL
BLOCK
50378-025
50378-025
50378-016
50378-025
50378-025
50378-016
50378-025
50378-025
50378-016
50378-034
50378-025
50378-016

57097-001
57097-001
57098-001
57097-001
57097-001
57098-001
57097-001
57097-001
57098-001
57097-001
57097-001
57097-001

FAN

57112-001
57112-001
57090-001
57112-001
57112-001
57090-001
57112-001
57112-001
57090-001
57112-001
57112-001
57090-001

5100 SERIES UNIT HEATER
PARTS LIST - CATALOG NUMBERS - 600 VOLT MODELS
MOTOR
ELEMENT ASSY.
AUTO RESET LIMIT
FAN OVERRIDE
XFMR
CONTACTOR
POWER TRML. BLOCK
FAN BLADE
TERMINAL BLOCK
GROUND CONN.
LOUVER

U3H5105CA4N
56562-017
56954-029
57640-003
56811-001
57641-003 (100VA)
58027-043
56817-001
51554-002
56809-001
1458
56986-003 (7)

U3H5107CA4N
56823-012
56954-030
57640-003
56811-001
57641-001 (150VA)
58027-043
56815-001
51554-002
56809-001
1458
56986-003 (7)

U3H5110CA4N
56823-012
56954-031
57640-003
56811-001
57641-001
58027-043
56815-001
51554-002
56809-001
1458
56986-003 (7)

U3H5115CA4N
56825-002
56954-032
57640-004
56811-001
57641-002 (300VA)
58027-043
56815-001
56813-001
56809-001
1458
56986-003 (7)

MOTOR
ELEMENT ASSY.
AUTO. RESET LIMIT
FAN OVERRIDE
XFMR
CONTACTOR
POWER TRML. BLOCK
FAN BLADE
TERMINAL BOARD
GROUND CONN.
LOUVER
XFMR PRI FUSE BLOCK
XFMR PRI FUSE (2)
FAN SPEED SW
MOTOR CAPACITOR

U3H5125CA4N
56943-002
56954-003
57640-005
56811-002
57641-001
58027-043 (2)
57098-001
57114-001
56809-001
3981
56986-004(9)
57643-001
57644-001 (2)
57112-001
57100-001

U3H5130CA4N
56943-002
56954-003
57640-005
56811-002
57641-001
58027-043 (2)
57098-001
57114-001
56809-001
3981
56896-004(9)
57643-001
57644-001 (2)
57112-001
57100-001

U3H5140CA4N
56943-002
56954-036
57640-005
56811-002
57641-004(350VA)
58027-043 (2)
57098-001
57115-001
56809-001
3981
56986-004(9)
57643-001
57644-001 (2)
57112-001
57100-001

U3H5150CA4N
56945-002
56954-037
57640-005
56811-003
57641-004
58027-043 (2)
57098-001
57115-001
56809-001
3981
56986-004(9)
57643-001
57644-001 (2)
57112-001
57100-001

MOTOR
ELEMENT ASSY.
FAN OVERRIDE
XFMR
CONTACTOR
POWER TRML. BLOCK
FAN BLADE
TERMINAL BOARD
GROUND CONN.
LOUVER

T3H5105CA4N
56562-017
56954-061
66811-001
57641-003
58027-043
56815-001
51554-002
56809-001
1458
56986-003(7)

T3H5107CA4N
56823-012
56954-054
56811-001
57641-003
58027-043
56815-001
51554-002
56809-001
1458
56986-003(7)

T3H5110CA4N
56823-012
56954-055
56811-001
57641-001
58027-043
56815-001
51554-002
56809-001
1458
56986-003(7)

T3H5115CA4N
56815-002
56954-056
56811-001
57614-002
58027-043
56815-001
56813-001
56809-001
1458
56986-003(7)

MOTOR
ELEMENT ASSY.
AUTO RESET LIMIT
FAN OVERRIDE
XFMR
CONTACTOR
POWER TRML. BLOCK
FAN BLADE
TERMINAL BOARD
GROUND CONN.
LOUVER
FAN SPEED SWITCH
MOTOR CAPACITOR

T3T5125CA1N
56943-002
56954-057
57640-005
56811-002
60719-018
58027-043 (2)
57098-001
57114-001
56809-001
3981
56986-004 (9)
57112-001
57100-001

T3T5130CA1N
56943-002
56954-058
57640-005
56811-002
60719-018
58027-043 (2)
57098-001
57114-001
56809-001
3981
56986-004 (9)
57112-001
57100-001

T3T5140CA1N
56945-002
56954-059
57640-005
56811-002
60719-018
58027-043 (2)
57098-001
57114-001
56809-001
3981
56986-004 (9)
57112-001
57100-001

T3T5150CA1N
56945-002
56954-060
57640-005
56811-002
60719-018
58027-043 (2)
57098-001
57114-001
56809-001
3981
56986-004 (9)
57112-001
57100-001

U3H5120CA4N
56825-002
56954-035
57640-004
56811-003
57641-002
58027-043
56815-001
56813-001
56809-001
1458
56986-003 (7)

T3H5120CA4N
56825-002
54929-006
56811-001
57641-002
58027-043
56815-001
56813-001
56809-001
1458
56986-003(7)

11

LIMITED WARRANTY
Products manufactured by TPI Corporation are warranted to the original consumer to be free from defects in
material and workmanship for twelve (12) months from the original purchase date.
The TPI limited warranty does not cover products that have been modified outside of our factory, damage or
failure caused by acts of God, abuse, misuse, connected to or placed on other than rated voltage, abnormal
usage, fault, installation, failure to follow suggested maintenance procedures enclosed with the product,
improper maintenance or any repairs other than those provided by an authorized TPI service center.
There are no obligations or liabilities on the part of the Corporation for consequential damages
arising out of or in connection with the use or performance of the product or other indirect damages
with respect to loss of property, revenues, profit, costs of removal installation, or reinstallation.
All implied warranties with respect to TPI products, including implied warranties for mechantability
and implied warranties for fitness, are limited in duration to twelve (12) months from original date of
purchase, except those products or parts of products which are warranted for long periods. On such
products or parts of products all implied warranties for merchantability and fitness are limited to the
duration of the extended warranty period thereon.
Some states do not allow the exclusions or limitation of incidental or consequential damages and some
states do not allow limitations on how long an implied warranty lasts. The above exclusions or limitations
may not apply to you.
During the warranty period, TPI Corporation will, at its sole option, repair or replace any defective parts or
products returned, freight prepaid, to the TPI Corporation factory or such other locations as TPI Corporation
may designate. Returned products must be packaged carefully and TPI Corporation shall not be responsible
for damage in transit.
When returning parts, the owner must provide the model number of the product and nature of difficulty being
experienced. This warranty does not obligate TPI Corporation to bear the cost of labor in replacing any
assembly, unit or componet part thereof, nor does the company assume any liability for secondary charges,
expenses for installing or removal, freight or damages. There will be charges rendered for product repairs
made after the warranty period has expired. Proof of purchase, including date, must accompany request for
in-warranty service. In any event, TPI Corporation’s maximum liability shall not in any case exceed the list
price for the product claimed to be defective. This warranty gives to you specific legal rights and you may
have other rights, which may vary from state to state. For the name of your nearest authorized TPI Corporation service center, please write to TPI Corporation, P.O. Box 4973, Johnson City, TN 37602.

Heating Products Warranty Coverage
Elements in 198 Series Portable
Elements in Baseboards
All Other Heating Products
Thermostats and Controls

Life of heater
10 Years
1 Year
2 Years

Ventilation Products Warranty Coverage
Series HD or HDH Fans
Series UHP of IHP Fans
All other Ventilation Products

5 Years
3 Years
1 Year

TASKMASTER
5100 SERIES

INSTALLATION
INSTALLATION
INSTRUCTIONS
INSTRUCTIONS
&&PARTS
PARTS LIST
LIST

Montage horizontal ou vertical
radiateur industriel et commercial

ATTENTION: Lisez les instructions soigneusement avant de commencer
l’installation, la mise en marche ou l’entretien du radiateur taskmaster.
Gardez ces instructions pour utilisation ulterieure.
CARACTERISTIQUES
Radiateur electrique ventilateur, disponible suivant les
tensions standards de 208, 240/208, 277, 480 ou de 600
volts.
Dix puissances de chauffage standard de 3.3 KW/11,260
BTUH jusqu’ a 50.0 KW/170, 600 BTUH.
Les modeles unipolaires de 3.3 jusqu a 10.0 Kw de 240/
208 volts peuvent se transformer sur le chantier en modele
tripolaire. (Les modeles uipolaires de 3.3, 5.0, 7.5 et 10
Kw de 277 volts ne peuvent etre transformes).
Le volet interieur specialement concu permet au ventilateur
d’appeler I’air uniformement a travers I’element massif en
acier.
Le diffuseur concu vers I’exterieur et les volets montes
dirigent plug encore uniformement la propulsion de I’air afin
de repondre aux exigences specifiques du montage
horizontal ou vertical de I’appareil.
Supports de montage mur/lafond ou verticaux en option.
(comme requis).

Quatre ecrous soudes sont disposes au dessus et a
I’arriere du boitier pour le montage de I’appareil au chantier
avec des tiges filetees ou des boulons aveu chaine.
(visserie fournie par d’autres).
Diffuseur anemostat ou radial (en option), donnant une
propultion d’air diversifiee lors du montage vertical de
l’appareil.
Instruments de controle varies pour installation sur le
chantier. Interrupteur, thermostat, interrupteur du
ventilateur pour la saison estivale, thermostat pour recu
peration de chaleur. Tous ont leurs conducteurs equippes
de serre-fils a lame. (a I’exception de I’interrupteur).
Tableau de branchement de la filerie de tous les instruments
de controle integres, en un seul endroit.
Circuit de controle standard basse tension de 24 volts sur
tous les modeles avec transformateur ou contracteur.
Boite de controle spacieuse ayant une porte d’acces fermee
a I’aide de deux attaches 1/4 de tour pour rendre I’intallation
facile.

INSTRUCTIONS D'ENDROIT NÉCESSAIRES

Général SAFETY INFORMATION / PRUDENCE :

Dès que la charge totale de chauffage est calculée, la
quantité et la capacité des chauffages d'unité doivent être
déterminés. parce qu'un grand nombre de chauffages de
capacité basse fournit la distribution de chaleur plus
uniforme. Cette approche est recommandée quand la région
sera occupée par un relativement grand nombre de personnel sédentaire, (c'est-à-dire travaillant des chaînes de
fabrication et aux bancs.)

Suivez tout l'habitant d'origine électrique et les codes de
sécurité, aussi bien que le Code Électrique national (NEC) et
l'acte de Santé et de Sécurité du Métier (OSHA).

Un grand nombre de plus petits chauffages d'unité de
capacité a tendance à prévenir des brouillons chauds, réduit
des niveaux bruyants et augmente la diversité de charge
pour aider à réduire la demande électrique et les frais
d'exploitation.
Dans les magasins où chauffent même la distribution et les
températures constantes sont moins importants, un plus
petit nombre de hautes unités de capacité peut être utilisé dans beaucoup de cas réduisant le prix d'installation. Pour
maintenir la distribution de chaleur raisonnable et réduire la
stratification sévère même dans les régions de baie plus
basses, le volume aérien total de l'espace devrait traverser
les chauffages d'unité environ trois fois par heure. (Prenez
des pieds cubiques totaux et la division par 20 déterminent
afin du chauffage total nécessaire l'estimation de CFM.)
Il est important que le voltage évalué de l'équipement
chauffant correspond au voltage de réserves. Le voltage de
réserves plus du voltage estimé du chauffage peut nuire à
l'équipement. Le voltage de réserves plus bas que le voltage
de chauffage évalué diminuera la production de chauffage
aussi bien que courra le risque de nuire à quelques
composantes.
Les chauffages d'unité horizontaux sont recommandés dans
les régions de baie basses avec les plafonds de 15 à 18
pieds maximums. Ceux-ci devraient être concentrés le long
du mur extérieur ou d'autres régions de la plus grande perte
de chaleur; espacé monter un mouvement aérien
généralement circulaire, chaque chauffage soutenant le
courant atmosphérique de l'autre. Supplémentaire vertical en
bas au-dessous des chauffages d'unité avec diffusers
auxiliaire approprié peut être trouvé pour contrer des pertes
de chaleur de plafond (voir le chiffre 1 des graphiques
d'Endroit).

Pour éviter le choc électrique possible, soyez sûrs que le
courant électrique est éteint au changement principal avant
de télégraphier ou assurer l'entretien de l'unité.
Si le pouvoir débranche n'est pas intrinsèque et est hors de
vue, la serrure cela dans la position ouverte et l'étiquette pour
prévenir l'application inattendue de pouvoir avant d'exécuter
n'importe quel service ou maintenance de l'unité.
L'unité quand installé doit être électriquement fondée
conformément à la pratique d'industrie Codée et standard
Électrique nationale
Vérifiez que la source de pouvoir conforme aux exigences de
votre équipement. Voir la Table 2 sur la page 6 pour la
grandeur de circuit et le fil
Vérifiez le voltage de chauffage et la phase en estimation de
l'étiquette pour confirmer qu'il correspond aux réserves de
service électriques.
Les schémas de connexions du chauffage et des
connexions de réserves sont attachés en permanence à
l'intérieur de la bouche d'accès de chauffage. Tous les
terminus sont codés conformément au schéma de
connexions. L'installation électrique auxiliaire est montrée
sur le schéma de connexions d'unité et la littérature de
soutien.
Le chauffage doit être monté au moins 7’ au-dessus de
l'étage pour prévenir le contact accidentel avec la lame de
fan qui pourrait provoquer la blessure. Installez l'unité ainsi il
n'y a aucune obstruction pour la consommation ou le renvoi.
Maintenez des déblayages comme montré sur la Table 1, 2,
la Figue 1 et 2.
Le mur/plafond montant la structure et ancrant des provisions doit être sur la force suffisante pour soutenir le poids
combiné du chauffage et du support de fixation.
H

H

H

H

H

Instructions d'Endroit du chiffre 1
H

H

H

H

V

V

H

H

EXPOSED
H

H

H

H

TASKMASTER
5100 SERIES
55 THRU 100 kW MODELS

INSTALLATION
INSTRUCTIONS
& PARTS LIST

Horizontal or Vertical Mounting
Industrial / Commercial
Unit Heater

ATTENTION: Read carefully before attempting to install,
operate or service the TaskMaster Unit Heater. Retain
these installation instructions for future use.
PRODUCT FEATURES
Forced air electric unit heater available in 208, 240/208,
and 480 volt, 3 phase as standard.
Ten standard heating capacities of 55.0 KW/187,715 BTUH
thru 100.0 KW/341,300 BTUH.
Specially designed inlet louver allows the fan to pull cool
air evenly across the high mass all-steel element.
Outward drawn venturi and adjustable louver assembly
further directs the outlet air in a uniform pattern to meet
specific air pattern requirements in either the horizontal
or vertical mounting position.

versatility when mounted vertically. (55 thru 75 kW only)
Modular control kits for field installation. Tthermostat,
summer fan switch, heat recovery thermostat. All kits with
spade terminals .
Single point terminal board wiring of integral control kits.
24 volt low voltage control circuit standard on all models.
Roomy control box with access door locked into position
by two (2) 1/4 turn fasteners for ease of installation.

Optional wall/ceiling or vertical mounting brackets (as
required).
Four position weld nuts supplied in case top and back
for field mounting by threaded rods or eye bolt with chain.
(Hardware supplied by others).
Optional radial or anemostat diffusers lending air pattern

Revised 03/07
Form XXXX

IMPORTANT: OWNER SHOULD RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE

PROPER LOCATION INSTRUCTIONS

GENERAL SAFETY INFORMATION / CAUTION:

Once the total heating load is calculated, the quantity and
capacity of the unit heaters must be determined. because
a large number of low-capacity heaters provides more
uniform heat distribution. This approach is recommended
when the area will be occupied by a relatively large
number of sedentary personnel, (i.e. working on production lines and at benches.)

Follow all local electrical and safety codes, as well as the
National Electrical Code (NEC) and the Occupational
Safety and Health Act (OSHA).

A large number of smaller capacity unit heaters tends to
prevent hot drafts, reduces noise levels, and increases
diversity of load to help reduce electrical demand and
operating costs.

If the power disconnect is not integral and is out-of-sight,
lock it in the open position and tag to prevent unexpected
application of power prior to performing any service or
maintenance of the unit.

In warehouses where even heat distribution and constant
temperatures are less important, a smaller number of high
capacity units can be used -- in many cases reducing
installation cost. To maintain reasonable heat distribution
and reduce severe stratification even in lower bay areas, the
total air volume of the space should pass through the unit
heaters about three times per hour. (Take total cubic feet
and divide by 20 in order to determine proper total heater
CFM rating.)

The unit when installed must be electrically grounded in
accordance with the National Electrical Code and standard industry practice.

It is important that the rated voltage of the heating equipment match the supply voltage. Supply voltage in excess
of the heater rated voltage can damage equipment.
Supply voltage lower than the rated heater voltage will
decrease heater output as well as run the risk of damaging some components.
Horizontal unit heaters are recommended in low bay
areas with maximum 15 to 18 foot ceilings. These should
be concentrated along outside wall or other areas of
greatest heat loss; spaced to set up a generally circular air
movement, each heater supporting the air stream of the
other. Additional vertical down below unit heaters with
appropriate accessory diffusers can be located to counteract ceiling heat losses (see Figure 1 Location charts).

H

Figure 1 Location Instructions
H

H

V

V

Make certain that the power source conforms to the
requirements of your equipment. See Table 2 on page 6
for wire and circuit size
Check heater voltage and phase on rating label to confirm
that it matches the electric service supply.
Wiring diagrams of the heater and supply connections are
permanently attached to the inside of the heater access
door. All terminals are coded in accordance with the
wiring diagram. Accessory wiring are shown on the unit
wiring diagram and supporting literature.
The heater must be mounted at least 7’ above the floor to
prevent accidental contact with the fan blade which could
cause injury. Install unit so there are no obstructions to the
intake or discharge. Maintain clearances as shown on
Table 1, 2, Fig. 1 & 2.
The wall/ceiling mounting structure and anchoring
provisions must be on sufficient strength to support the
combined weight of the heater and mounting bracket.

H

H

H
H

H

To avoid possible electrical shock, be sure the electrical
current is turned off at the main switch prior to wiring or
servicing of unit.

H

H

H

EXPOSED
H

H

2

H

H

PRINCIPLES OF OPERATION
Upon a call for heat from the floor level or unit mounted
optional accessory thermostat, the unit fan motor and
heating elements shall be energized and remain ON until
temperature reaches setting of thermostat; at which time
the heating elements shall be deenergized.
The fan motor shall continue to run and purge heater
casing of residual heat until setting of fan override is
reached, then the fan motor shall be deenergized.
All units are supplied with a single speed motor .The 55-75
kW heaters are supplied with 3 stages of heat. The heater
can be wired as one stage, two stage or three stage. The
80 thru 100 kW models are supplied with four stages and
be operated as 1 thru 4 stages.The thermostat or step
controller(optional) will, upon a call for heat, energize fan
motor and the first stage heating element. Should temperature continue to fall, the thermostat shall energize the
remaining stages according to demand.
Upon a rise in space conditions towards setting of the
thermostat or step controller, the stages of heating elements shall be deenergized in reverse sequence.
The fan motor shall continue to run and purge heater
casing of residual heat until setting of fan override is
reached, then the fan motor shall be deenergized.
The accessory unit mounted stratification thermostat will
energize the unit heater fan motor upon a rise in
temperature above its setting.

When the unit mounted stratification thermostat closes on a
temperature rise and at the same time the floor thermostat
calls for heat, the motor shall be energized immediately and
the heating element shall be energized, as previously
described.
The manual reset safety high limit shall deenergize the
heating elements and control circuits should the temperature
exceed the setting of this device. The fan safety override
shall energize fan motor any time the setting of this device is
exceeded so as to purge heater casing of excess residual
heat.
When the accessory fan switch is placed in the ON position
(for summer air circulation), the unit heater fan motor shall
be energized.
NOTE: The wall thermostat is to be set to the OFF position
during this mode of operation (units with contactors).
For those accessory thermostats equipped with an integral
fan switch, place the switch in the HEAT, or AUTO position
for operation of the fan and elements which shall then be
under control of the thermostat as described above.
When switch is placed in the OFF position, the unit shall be
deenergized. When switch is placed in the FAN position,
elements shall be deenergized and fan shall be immediately energized.

VERTICAL DISCHARGE UNITS - AIR PATTERNS

General Distribution
(No Diffuser)

Louver Diffuser (Standard)

Radial Diffuser (Optional)

Anemostat Diffuser
(Optional l)

55 thru 75kW only

55 thru 75kW only

TABLE 1
USED
ON

MAX
MTG
HT.

A

55 THRU 75 KW

--

--

--

80 THRU 100 kW

--

--

--

STD = Standard

B

STOCK
NO.

MAX
MTG
HT.

A

STD

--

STD

--

N/A = Not Applicable

MAX
MTG
HT.

A

STOCK
NO.

--

--

--

AD5175

--

--

--

N/A

STOCK
NO.

MAX MTG HT.

A

45O

OPEN

45O

OPEN

RD 5175

--

--

--

--

N/A

--

--

--

--

Optional diffusers lend added air pattern versatility to
individual vertical down blow installations as shown in
above illustations.
3

INSTALLATION INSTRUCTIONS
TASKMASTER -- 5100 SERIES UNIT HEATER
ATTENTION: READ INSTRUCTION CAREFULLY
All electric unit heaters are shipped fully assembled.
Installation includes hanging the unit, mounting the built-in
and remote accessories, wiring of optional control devices,
and electrical wiring to the unit.
To insure proper delivery of the heated air to desired areas,
follow the mounting height and air projection tables include
in these instructions. Follow Fig. 1 & 2 for minimum wall
and ceiling clearances.

Heaters may be mounted in the horizontal or vertical air
discharge configuration using factory optional supplied
accessory mounting equipment or using special hardware
facilities supplied by others.
After the installation is complete, replace the access panel.
Set the controls (thermostat, switch) at their desired
control point and apply power to the unit.
Check correct operation.
DIMENSIONS

FIG. 1
HORIZONTAL DISCHARGE

FIG. 2
VERTICAL DISCHARGE

The wall and/or ceiling structure must be sufficient to
support the combined weight of the heater and any
mounting bracket and accessories.

DIMENSIONS (INCHES)
KW
55.0 - 75.0
80.0 - 100.0

Be sure power source is deenergized before installing
heater. Check heater voltage and phase listed on heater
date tape on back of unit to make sure they are the same
as the electrical service supplied.

H
35-1/2
39-1/2

W
30-1/2
37-5/8

D
14-1/2
18-1/2

TYPICAL FOR
55 THRU 100 KW

Units that carry a dual voltage rating (HF) require specific
wiring changes when converting from 240 to 208 volt service
supplied.
Open the access panel (2 1/4 turn fasteners).
Remove the desired knock-out(s) on back of the heater.
Install any optional accessories following their installation
instructions before mounting unit. Following the correct
unit/accessory wiring diagram, connect the power supply,
electrical ground and accessories to the correct terminals
or termination points using accepted practices.

(4) 5/16"-18 MOUNTING POINTS
FOR ALL THREAD OR
OPTIONALFACTORY
CEILING HANGER

ACCESSORY K.O.'S

POWER K.O.'S

REAR OF UNIT SHOWN

4

INSTALLATION INSTRUCTIONS
TASKMASTER -- 5100 SERIES UNIT HEATER (part 2)
HORIZONTAL -- AIR DISCHARGE MOUNTING
SHOWN IN: FIGURE 5 & 6
Swivel hanger brackets may be used to suspend unit
heaters from either the wall (figure 5) or the ceiling
(figure 6). Attach hanger base “A” to top of heater with
the four 5/16 X 18 caps screws and lockwashers (provided in envelope).
Attach main hanger frame “B” to wall or ceiling in
desired location using appropriate hardware or welding.
Lift heater into position inserting 5/8” bolt with lockwasher
through hole in main hanger frame, tightening to welded
nut on hanger base within two turns of being tight.
Swivel heater to desired position, tighten bolt.
VERTICAL -- AIR DISCHARGE MOUNTING
SHOWN IN: FIGURE 7

Attach short angle brackets “A” to back of heater with
four 5/16 X 18 capscrews “B”, lockwashers “F”. Be sure
vertical leg of angle brackets face top and bottom of
heater.
Attach inverted U frames “D” to short angle brackets
with four 5/16 X 18 capscrews “K”, washers “L”,
lockwashers “M” and nuts “N”.
Attach long angle brackets “J” to inverted frames “D”
with four 5/16 X 18 capscrews “K”, washers “L”,
lockwashers “M” and nuts “N”.
Attach heater and bracket assembly to ceiling in
desired location using customer supplied equipment
sufficient to support the assembly.

FIGURE 7
CEILING MOUNT VERTICAL DISCHARGE
V5150 SHOWN. SEE INSTALLATION INSTRUCTIONS
PROVIDED FOR V51100.

Figure 5
WALL MOUNT
HORIZONTAL DISCHARGE

B

A

Figure 6
CEILING MOUNT
HORIZONTAL DISCHARGE

B

NOTE: When mounting heater using 5/16” all thread
rod (by others) do not screw the rod more than 1/2”
beyond the inside of the case.

A

5

5100 SERIES UNIT HEATER
ELECTRICAL DATA (Table 2)
CATALOG
NUMBER
F3F5155CA1
HF3B5155CA1
P3P5155CA1
F3F5160CAI
HF3B5160CAI
P3P5160CA1
F3F5165CAI
HF3B5165CA1
P3P5165CA1
F3F5170CA1
HF3B5170CA1
P3P5170CA1
F3F5175CA1
HF3B5175CA1
P3P5175CA1
HF3B5180CA1
P3P5180CA1
HF3B5185CA1
P3P5185CA1
HF3B5190CA1
P3P5190CA1
HF3B5195CA1
P3P5195CA1
HF3B51100CA1
P3P51100CA1

KW
RATING

BTU/HR
(000)

HEATER /
MOTOR
VOLTAGE

HEATER
PHASE

CONTROL
VOLTAGE

AMPS
PER
PHASE

BRANCH CIRCUIT
PROTECTION
SIZE-(A)

55.0
55.0/41.25
55.0
60.0
60.0/45.0
60.0
65.0
65.0/48.75
65.0
70.0
70.0/52.5
70.0
75.0
75.0/56.25
75.0
80.0/60.0
80.0
85.0/63.75
85.0
90.0/67.5
90.0
95.0/71.25
95.0
100.00/75.0
100.00

187.7
187.7/140.8
187.7
204.7
204.7/153.6
204.7
221.8
221.8/166.4
221.8
238.9
238.9/179.2
238.9
256.0
256.0/192.0
256.0
273.0/204.7
273.0
290.0/217.5
273.0
307.1/230.4
307.1
324.2/243.1
324.2
341.3/256.0
341.3

208
240/208
480
208
240/208
480
208
240/208
480
208
240/208
480
208
240/208
480
240/208
480
240/208
480
240/208
480
240/208
480
240/208
480

3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3

24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24

152.8
132.5/114.6
66.2
166.7
144.6/125
72.3
180.6
156.6/135.4
78.3
194.4
168.7/145.8
84.3
208.3
180.7/156.3
90.3
192.8/166.7
96.3
204.8/177.1
102.4
216.9/187.5
108.4
229/198
114.4
241/208.3
120.4

200
175/150
90
225
200/175
100
250
200/175
100
250
225/200
110
300
250/200
125
250/225
125
300/225
150
300/250
150
300/250
150
350/300
175

* Use 75 degree C Wire

6

**Use Copper Conductors on all heaters

SUPPLY WIRE
SIZE 75o C
AWG **
2/0
1/0,1
4
2/0
1/0,1
4
3/0
2/0,2/0
4
3/0
2/0,1/0
3
4/0
3/0,2/0
3
3/0,2/0
3
4/0,3/0
2
4/0,3/0
2
250 MCM,3/0
1
250MCM,4/0
1

5100 SERIES UNIT HEATER
AIR DELIVERY DATA
CFM at
OUTLET
3400
3400
3400
3400
3400
3400
3400
3400
3400
3400
3400
3400
3400
3400
3400
5000
5000
5000
5000
5000
5000
5000
5000
5000
5000

FPM at
OUTLET
1485
1485
1485
1485
1485
1485
1485
1485
1485
1485
1485
1485
1485
1485
1485
1529
1529
1529
1529
1529
1529
1529
1529
1529
1529

FAN MOTOR DATA

TEMPETURE
RISE
o
F

HP

55
55/41
55
60
60/45
60
65
65/49
65
70
70/53
70
75
75/56
75
55/41
55
58/44
58
61/46
61
65/48
65
68/51
68

1/3
1/3
1/3
1/3
1/3
1/3
1/3
1/3
1/3
1/3
1/3
1/3
1/3
1/3
1/3
3/4
3/4
3/4
3/4
3/4
3/4
3/4
3/4
3/4
3/4

Motor
RPM

MAX. MTG
Horizontal

AIR
THROW

WEIGHT
LBS.

Vertical

1100
1100
1100
1100
1100
1100
1100
1100
1100
1100
1100
1100
1100
1100
1100
1100
1100
1100
1100
1100
1100
1100
1100
1100
1100

7

5100 SERIES UNIT HEATER
TROUBLE SHOOTING GUIDE
SYMPTOM

POSSIBLE CAUSE(S)

CORRECTIVE ACTION

Thermostat calls for
heat, but heater does
not function.

1. Open (blown) fuse

1. Replace fuses, check for cause.
(see Replacement Parts List for fuse size)

2. INCORRECT WIRING
2. CHECK WIRING CONNECTIONS
3. Thermal cut-out open,
deenergizing heater
element and control
circuit. Push reset button.

Fan motor runs
“HOT”

Fan motor runs,
but no heat.

3. Check for the following:
--- Correct supply volts and phase
--- Correct control wiring (heater control
must be thru thermostat control wiring
section only).
--- Power interruption to heater during
heater operation.
--- Restriction of air around heater 1-5
minute fan purge after thermostat off.

1. Dust accumulation or
excessive dirt on motor

1. Clean fan motor and casing of grease
and oil accumulation.

2. Dirt accumulation

2. Clean louvers and between heating
elements.

3. Motor needs lubrication.

3. See Maintenance.

1. Element contactor not
operating correctly.

1. Check wiring for open circuit. Replace
contactor if defective

2. Element fuse blown.

2. Replace fuses, check for cause. (see
Replacement Parts List for fuse size)

MAINTENANCE
CAUTION: Make certain that the power source is disconnected before attempting to service or disassemble any
componet. If the power disconnect is out of the line of sight, lock it in the OPEN position and tag to prevent the
application of power.
ELECTRICAL
Once a year inspect the control panel wiring to make certain insulation is intact and all connections are tight. Inspect
all heater and relay contacts. If the contacts appear badly pitted or burned, replace the contactor / relay.
CLEANING
Clean the unit casing, fan and motor once a year. A dirty motor will tend to run hot and eventually will be damaged
internally. Any rust spots on the casing should be cleaned and repainted.
LUBRICATION
All units have fan motors that are permanently lubricated so that only occasional cleaning is required.

8

5100 SERIES UNIT HEATER
WIRING DIAGRAM SCHEDULE
DIAGRAM
NO.
WD5160

WD5161

MODELS

F3F5155CA1,F3F5160CA1,F3F5165CA1,F3F5170CA1,F3F5175CA1

HF3B5155CA1,HF3B5160CA1,HF3B5165CA1,HF3B5170CA1,HF3B5175CA1

WD5162

P3P5155CA1,P3P5160CA1,P3P5165CA1,P3P5170CA1,P3P5175CA1

WD5163

HF3B5180CA1,HF3B5185CA1,HF3B5190CA1,HF3B5195CA1,HF3B51100CA1

WD5164

P3P5180CA1,P3P5185CA1,P3P5190CA1,P3P5195CA1,P3P51100CA1

9

SERIES 5100

TASKMASTER
SC5100
Installation Instructions
FOR MODELS 5155 THRU 51100
READ THESE INSTRUCTIONS CAREFULLY BEFORE INSTALLING CONTROL. BE SURE TO
DE-ENERGIZE POWER SOURCE TO UNIT BEFORE INSTALLING CONTROL.
1.) Disconnect heater from power supply.
2.) Mount the controller in the control compartment as shown.
3.) Refer to page 2 for wiring.

FORM: 8987
ECO 1-5719

1) AFTER MOUNTING BOARD IN HEATER, PROCEED WITH WIRING AS SHOWN.
2) TERMINAL ARE IN REFERENCE TO THE TERMINAL BOARD LOCATED IN THE CONTROL
COMPARTMENT.
3) REFER TO MANUFACTURERS MANUAL FOR THERMOSTAT, 0-10VDC OR 4-20mA SIGNAL
CONNECTIONS AND SETTINGS. “DIP” SWITCHES MUST BE SET FOR INPUT AND
STAGING. SEQUENCING OPERATION MUST ALWAYS BE LAST IN FIRST OUT(LIFO)
WHICH IS THE FACTORY DEFAULT SETTING.
4) THE 5100 SERIES 55-75kW UNITS ARE CAPABLE OF 3 STAGES, THE 80-100kW ARE
CAPABLE OF 4 STAGES.

CONTROLLER

CABLE ASSEMBLY

WHITE

BLACK

RED

BLUE

ORANGE

BROWN

TERMINAL 4

K
AC
BL

TERMINAL 8
E
WHIT
RED

TERMINAL 5

BLUE

BR O
WN
OR
AN
GE

TERMINAL 3
TERMINAL 10

TERMINAL 1

FORM: 8987
ECO 1-5719

SERIES 5100

TASKMASTER
INSTALLATION INSTRUCTIONS
DCS202 POWER DISCONNECT SWITCH TASKMASTER SERIES
RATING - 2 POLE
20 AMP 277 VAC RESISTIVE
READ THESE INSTRUCTIONS THOROUGHLY BEFORE INSTALLING SWITCH. BE SURE TO DE-ENERGIZE POWER SOURCE TO UNIT BEFORE INSTALLING SWITCH. CHECK HEATER DATA LABEL TO INSURE THAT HEATER ELECTRICAL RATING DOES NOT EXCEED THE POWER DISCONNECT ELECTRICAL
RATING.
SUPPLY WIRES MUST BE COPPER CONDUCTORS ONLY.
ALL WIRING TO BE IN ACCORDANCE WITH CSA, NEC AND LOCAL CODES. DO NOT REMOVE FISHPAPER
BARRIER FROM SWITCH ASSEMBLY. DO NOT INTERRUPT POWER TO HEATER WHILE THE UNIT IS
OPERATING IN ORDER TO PERFORM NORMAL MAINTENANCE SERVICE. ANY POWER INTERRUPTION
DURING NORMAL OPERATION WILL PREVENT THE FAN FROM PURGING THE UNIT OF RESIDUAL HEAT.

1.) Remove 1/2” (13mm) diameter knockout from heater back.
NOTE: 1/2” (13mm) diameter knockout is located on the heater back center approximately 3 1/2” (89mm)
from the bottom of heater. NOTE: DO NOT remove fishpaper barrier from switch assembly.
2.) Remove knurled nut and “ON-OFF” indicator ring from switch assembly.
3.) Position switch assembly inside heater control compartment so the data label on switch assembly can be
visible from open side of compartment. Align flats on switch assembly with flats in heater back. Install
“ON-OFF” indicator ring. Secure switch assembly to heater back with knurled nut.
4.) Wire switch according to wiring diagram located on inside of bottom panel. Attach switch leads T1 and T2
to L1 and L2 of heater terminal block. Attach switch leads L1 and L2 to incoming supply conductors L1 and
L2 by suitable means.
5.) Restore power to unit and check for proper operation.

FORM: 8946
ECO 1-5148

SERIES 5100

TASKMASTER
INSTALLATION INSTRUCTIONS
DCS403, DCS603, DCS1003
POWER DISCONNECT SWITCH TASK MASTER SERIES
RATING

DCS403
DCS603
DCS1003

3 POLE
3 POLE
3 POLE

40 AMPS
60 AMPS
100 AMPS

600 VAC RESISTIVE
600 VAC RESISTIVE
600 VAC RESISTIVE

January 1990
WARNING: Open supply circuit disconnect switch
before servicing unit. Failure to do so may result in
personal injury or death from electrical shock.
NOTE: Before installing disconnect switch, check heater data label
to ensure that heater electrical rating does not exceed the switch
electrical rating.
NOTE: All wiring must be done in accordance with National and
Local Electrical Codes. Supply conductors to unit must be copper.
1.) Disconnect heater from power supply.
2.) Locate and remove large knockout and two adjacent small
knockouts from heater where switch is to be mounted.
A.) 3-5KW - 1/2” diameter knockout is located centered on heater
back approximately 3 1/2” from bottom of the unit, with the two
slotted knockouts on each side.
B.) 7-50KW - 1/2” diameter knockout is located on left hand
side of heater front approximately 2 1/2” from bottom of
unit, with the two 3/16” slotted knockouts on each side.
3.) Remove the knob and mounting plate from switch assembly.
Remove terminal shield.
(NOTE: Terminal shield must be installed on disconnect switch
after incoming supply wiring has been connected).

4.) Connect the incoming power supply leads to terminals
L1-L2-L3 of the disconnect switch. Connect the incoming
ground lead to the grounding screw (or lug). On some models
with adequate access the switch may be mounted (Step 5)
prior to connecting the supply wiring.
5.) Place the switch inside the heater control compartment with
the shaft extending through the 1/2” diameter knockout. The
switch must be oriented so the terminal shield is positioned
toward the left side of the heater. Data and caution labels
must be plainly visible from open end of compartment. Align
switch assembly and mounting plate with the 3/16” slotted
knockouts in unit and secure with the #6 or #8 screws
provided.
6.) Connect the leadwires on the switch, marked T1-T2-T3 to the
heater power terminal block marked L1-L2-L3 (Note: For single
phase units remove center leadwire marked T2).
7.) Attach the “On-Off” cover to the mounting plate. Install knob
and tighten screw.
8.) Check all connectors for tightness and electrical clearances.
Close cover and latch, then restore electrical power and check
heater in each mode of operation.

FORM: 8947
ECO 1-5148

SERIES 5100

TASKMASTER
Installation Instructions
FS5101 TASKMASTER SERIES
UNIT MOUNTED LINE VOLTAGE SUMMER FAN SWITCH
FOR USE ON UNITS WITH 208, 240, 277 VOLT SUPPLY ONLY
READ THESE INSTRUCTIONS CAREFULLY BEFORE INSTALLING SWITCH. BE SURE TO DEENERGIZE POWER SOURCE TO UNIT BEFORE INSTALLING SWITCH. BE SURE TO INSTALL
THE APPROPRIATE MODEL SWITCH ON THE CORRECT UNIT.
1.) Disconnect heater from power supply.
2.) Remove appropriate knockout for switch being used. Refer to Fig. 1.

Fig. 1

Fig. 1

Fig. 2

Models 5102 thru 5105 - Fig. 2
Knockout is located on heater back center
approximately 1 1/8” (29mm) from bottom of
heater.
Models 5107 thru 5120 - Fig. 3
Knockout is located on heater back approximately
3 1/4” (83mm) from bottom of heater with the 1/2”
(13mm) diameter knockout located approximately
3 3/4” (95mm) to the right of the back of center.
Models 5125 thru 51100 - Fig. 4
Knockout is located on heater back approximately
1 3/4” (44mm) from bottom of heater with the 1/2”
(13mm) diameter knockout located approximately
5” (127mm) to the left of the back center.

Fig. 3

FORM: 8948
ECO 1-5719

Fig. 4

3.) Remove knurled nut and “On-Off” indicator ring from switch assembly.
4.) Align flats on switch with flats in knockout (Note position switch so data label will be visible from
open end of control compartment.
5.) Install “On-Off” indicator ring and secure switch assembly to heater with knurled nut.
6.) Wire switch according to wiring diagram located on inside of heater bottom panel. Attach switch
leads 7 & 9 to terminals 7 & 9 on terminal board.
7.) Remove paper backing from “Fan-Heat” decal and affix to unit with fan toward on and heat
toward off.
8.) After power is available to unit, check for proper operation.
NOTE: For summer fan operation only, thermostat must be in OFF position.
TPI CORPORATION
P.O. BOX 4973
JOHNSON CITY, TN 37602
(423) 477-4131
(423) 477-0064

FORM: 8948
ECO 1-5719

SERIES 5100

TASKMASTER
FSW5111 TASKMASTER SERIES
REMOTE (WALL MOUNT) SUMMER FAN SWITCH
LINE VOLTAGE SWITCH FOR USE ONLY ON TASKMASTER HEATERS WITH A POWER
SUPPLY OF 208, 240 OR 277 VOLT SERVICE.
READ THESE INSTRUCTIONS CAREFULLY BEFORE INSTALLING SWITCH. DO NOT USE
THIS SWITCH ON UNITS WITH 480 OR 600 VOLT MOTOR CIRCUIT. BE SURE TO
DE-ENERGIZE POWER SOURCE TO UNIT BEFORE INSTALLING SWITCH. ALL
CONDUCTORS FROM SWITCH TO UNIT MUST BE COPPER (NEC) AND EXISTING LOCAL
CODE REQUIREMENTS.
1.) Disconnect heater from power supply.
2.) Remove 7/8” diameter knockout from heater back for control wiring from switch.
Models 5102 thru 5105
7/8” diameter knockouts located 2 1/2” to right of heater back center and 3 5/16” from bottom
of heater.
Models 5107 thru 5120
7/8” diameter knockouts located 5 1/2” to left of heater back center and 1 1/2” from bottom of
heater.
Models 5125 thru 5150
7/8” diameter knockouts located 5 1/16” to left of heater back center and 3 5/8” from bottom of
heater.
Models 5155 thru 5175
7/8” diameter knockouts located 5 1/16” to right of heater back center and 3 7/16” from bottom
of heater.
Models 5180 thru 51100
7/8” diameter knockouts located 5 1/16” to right of heater back center and 5” from bottom of
heater.
3.) Mount switch assembly in remotely located utility box.
4.) Wire switch according to wiring diagram located on inside of heater bottom panel. Attach leads
7 & 9 from switch to heater terminals 7 & 9 on heater terminal board.
5.) Remove paper backing from “Fan-Heat” decal and affix to utility box cover with fan toward on
and heat toward off.
6.) After installation is complete, restore power to heater and check for proper operation.
NOTE: For summer fan-operation only thermostat must be in OFF position.
FORM: 8949
ECO 1-5719

SERIES 5100

TASKMASTER
INSTALLATION INSTRUCTIONS
FSW5112 TASKMASTER SERIES
REMOTE (WALL MOUNT) LOW VOLTAGE SUMMER FAN SWITCH
LOW VOLTAGE SWITCH FOR USE ON TASKMASTER HEATERS WITH SUFFIX CODE “CA1” ONLY.
THIS ACCESSORY PACKAGE CONTAINS A REMOTE FAN SWITCH AND A LOW VOLTAGE RELAY FOR UNIT
MOUNTING.
READ THESE INSTRUCTIONS CAREFULLY BEFORE INSTALLING SWITCH. USE THIS SWITCH ONLY ON
UNITS WITH 24 VOLT CONTROL CIRCUITS. BE SURE TO DE-ENERGIZE POWER SOURCE TO UNIT BEFORE
INSTALLING SWITCH. ALL CONDUCTORS FROM SWITCH TO UNIT MUST BE COPPER. ALL WIRING TO BE
IN ACCORDANCE WITH THE NATIONAL ELECTRIC CODE (NEC) AND EXISTING LOCAL CODE
REQUIREMENTS.
5.) Fig. 1 Mount low voltage relay in wiring compartment1.) Disconnect heater from power supply.
Slip long leg of relay base under raised section of
2.) Remove 7/8” diameter knockout from heater back
control mounting plate and attach diagonally
for control wiring switch:
opposite corner of relay base to control mounting
Models 5102 thru 5105
plate with the No. 8 sheet metal screw supplied.
7/8” diameter knockout is located 2 1/2” to right of
NOTE: Models 5102 thru 5105
heater back center and 3 5/16” from bottom of
Relay is mounted next to heater power
heater.
terminal block.
Models 5107 thru 5120
Models 5107 thru 51100
7/8” diameter knockout is located 5 1/2” to left of
Relay is mounted next to heater control
heater back center and 1 1/2” from bottom of heater.
terminal board.
Models 5125 thru 51100
6.)
Wire
relay
according to wiring diagram located on
7/8” diameter knockout is located 5 1/16” to left of
heater back center and 3 5/8” from bottom of heater.
inside of heater bottom panel. Attach relay leads
3.) Mount switch assembly to remotely located utility
6, 8, 7 & 9 to terminals 6, 8, 7 & 9 on terminal
box.
board.
4.) Wire switch according to wiring diagram located
7.) Remove paper backing from “Fan-Heat” decal and
on inside of heater bottom panel. Attach leads 2
affix to utility box cover with fan toward on and heat
and 4 from switch to heater terminals 2 and 4 on
toward off.
heater terminal board.
8.) After installation is complete, restore power to
heater and check for proper operation.
NOTE: For summer fan operation only thermostat
must be in OFF position.

2-5 kw

7-20 kw

25-50kw
FORM 8950
ECO 1-5719

SERIES 5100

TASKMASTER
INSTALLATION INSTRUCTIONS
TW1510, TW1512
REMOTE MOUNTING
LINE VOLTAGE THERMOSTAT
SINGLE STAGE
TW1510 (SPST)
TW1512 (DPST)
1) Disconnect heater from power supply.
2) Mount wall thermostat in desired location.
3) Wire the thermostat to the heater following the wiring diagram located on the heater. All wiring to be
in accordance with local and/or national codes.
4) Restore power to the heater.
5) Check for proper thermostat operation

INSTRUCTIONS D'INSTALLATION

THERMOSTAT À TENSION COMPOSÉE
TW1510, TW1512
INSTALLATION À DISTANCE
À UN ÉTAGE
TW1510 (SPST)
TW1512 (DPST)
1) Débranchez le radiateur de l'alimentation de courant.
2) Installez le thermostat mural à l'endroit désiré.
3) Connectez le thermostat au radiateur en suivant le schéma de filerie situé sur le radiateur.
Toute la filerie doit être en conformité avec les codes national et local.
4) Remettez le radiateur sous tension.
5) Vérifier au bon fonctionnement.

SERIES 5100

TASKMASTER
INSTALLATION INSTRUCTIONS
CEILING HANGER BRACKET TASKMASTER SERIES
VERTICAL DISCHARGE AIR DELIVERY

J

K

MODEL V5105 USE WITH 5102-5105 UNITS
MODEL V5120 USE WITH 5107-5120 UNITS
MODEL V5150USE WITH 5125-5175 UNITS

L

M N

D

F
E

B
F

A
G
H

MODEL V5105 IS FOR USE WITH 5102 THRU 5105 HEATERS.
MINIMUM MOUNTING DISTANCES FOR 5102 THRU 5105 HEATERS:
12” FROM CEILING AND ADJACENT SURFACES
7’ FROM FLOOR TO FRONT EDGE OF HEATER FRONT VENTURI
MODEL V5120 IS FOR USE WITH 5107 THRU 5120 HEATERS
MODEL V5150 IS FOR USE WITH 5125 THRU 5175 HEATERS
MINIMUM MOUNTING DISTANCES FOR 5107 THRU 5175 HEATERS:
18” FROM CEILING
24” FROM ADJACENT SURFACES
7’ FROM FLOOR TO FRONT EDGE OF HEATER FRONT VENTURI
1) Attach short angle brackets “A” to back of heater with four 5/16-18 bolts “B”, lockwashers “F”.
Be sure vertical leg of angle brackets face top and bottom of heater.
2) Attach inverted U frames “D” to short angle brackets with four 5/16-18 bolts “E”, washers “F”, lockwashers
“G” and nuts “H”, oriented as shown.
3) Attach long angle brackets “J” to inverted U frames “D” with four 5/16-18 bolts “K”, washers “L”, lockwashers
“M” and nuts “N”.
4) Attach heater and bracket assembly to ceiling in desired location using customer supplied hardware
sufficient to support the assembly.

FORM: 56620-004
ECO 1-5719

SERIES 5100

TASKMASTER
INSTALLATION INSTRUCTIONS
TW1510, TW1512
REMOTE MOUNTING
LINE VOLTAGE THERMOSTAT
SINGLE STAGE
TW1510 (SPST)
TW1512 (DPST)
1) Disconnect heater from power supply.
2) Mount wall thermostat in desired location.
3) Wire the thermostat to the heater following the wiring diagram located on the heater. All wiring to be
in accordance with local and/or national codes.
4) Restore power to the heater.
5) Check for proper thermostat operation

INSTRUCTIONS D'INSTALLATION

THERMOSTAT À TENSION COMPOSÉE
TW1510, TW1512
INSTALLATION À DISTANCE
À UN ÉTAGE
TW1510 (SPST)
TW1512 (DPST)
1) Débranchez le radiateur de l'alimentation de courant.
2) Installez le thermostat mural à l'endroit désiré.
3) Connectez le thermostat au radiateur en suivant le schéma de filerie situé sur le radiateur.
Toute la filerie doit être en conformité avec les codes national et local.
4) Remettez le radiateur sous tension.
5) Vérifier au bon fonctionnement.

SERIES 5100

TASKMASTER
Installation Instructions

TFS5102 TASKMASTER SERIES
REMOTE MOUNTING
24 VOLT OPERATION
TWO STAGE CONTROL & INTEGRAL FAN SWITCH
1.) Disconnect heater from power supply.
2.) At the desired location, run the thermostat cable through the hole in the center of the thermostat
mounting sub-base. Leave about three inches of wire for connections. For the correct number of
wires, see appropriate heater or control package wiring diagram and instructions.
3.) Attach the sub-base directly to the wall or on a HORIZONTAL outlet box. Level the sub-base with
a spirit level.
4.) Connect the wires to the sub-base following the wiring diagram. complete installation of wiring on
the heater and/or control package. Plug the cable entrance hole to prevent drafts from affecting
thermostat operation.
5.) Remove the thermostat cover by pulling up the bottom edge until it snaps free of the locking
springs. Set the heat anticipator to correspond with the primary system control (relay, etc.). The
tabs along the top inside edge fit the sockets on the upper corners of the sub-base.
6.) Hang the thermostat on the sub-base and tighten the two captive screws on the thermostat base.
Replace cover by hooking cover tabs into the thermostat base and pushing down until the cover
snaps into the locking springs.
7.) Restore power to the heater and check for correct operation.
FAN
SYSTEM
SWITCH
SWITCH
FUNCTION
On
Off
Fan on - heat off
On
Auto
Fan on - stat cycles
2 stages heat
Auto
Off
Fan off - heat off
Auto
Auto
Fan cycles with first stage heatstat cycles 2 stages heat

Honeywell

FORM: 56621-099
ECO 1-5719

FIG. 2
2 - 5KW

FIG. 2
7 - 20KW

FIG. 2
25 - 50KW

8.) Fig. 2 Mount low volt relay in wiring compartment. Slip long leg of relay base under raised section of control
mounting plate and attach diagonally opposite corner of relay base to control mounting plate with the No.
8 sheet metal screw supplied.
NOTE: Models 5102 thru 5105
Relay is mounted next to heater terminal block
Models 5107 thru 5150
Relay is mounted next to heater terminal board
9.) Wire relay according to wiring diagram located on inside of heater bottom panel. Attach relay leads 6, 8,
7 & 9 to terminals 6, 8, 7 & 9 on terminal board.
10.) After installation is complete, depress the reset button to insure continuity before applying power. After power
is available to unit, check for proper operation.

FORM: 56621-099
ECO 1-5719

SERIES 5100

TASKMASTER
INSTALLATION INSTRUCTIONS
Dust Shield - Taskmaster Series
For Horizontal Air Delivery Units
Model DS5105
Model DS5120
Model DS5150

Use with 5102-5105 Units
Use with 5107-5120 Units
Use with 5125-5150 Units

1) Install the hanger base “A” on the heater following the instruction sheet packed with the
combination wall/ceiling bracket or the hanger base.
2) Attach the hanger bracket to the wall or ceiling as desired following instructions packed with
the bracket.
3) Following the correct illustration below:
Fig. A
Fig. B
Fig. C

Wall Mounted Bracket
Ceiling Mounted Bracket
Customer Supplied Bracket or Direct Connection to Building Structural Member.

Position the dust shield as shown and insert the bolt of the hanger base “A” through the hole in
the dust shield, attach to the hanger bracket or structural member and attach the lock nut “E”
and complete installation as per the bracket installation sheet.
NOTE: The dust shield is to be positioned on the same axis as the heater.

"E"

"A"
"A"

Fig. A
"A"
Fig. B

Fig. C

FORM: 56621-101
ECO 1-5719

SERIES 5100

TASKMASTER
INSTALLATION INSTRUCTIONS
CAUTION: Models 5155 thru 5175 require that two circuits be wired to stage one and one circuit be
wired to stage two.
TW123 - TASKMASTER SERIES
REMOTE MOUNTING
24 VOLT OPERATION
TWO STAGE CONTROL
1. Disconnect heater from power supply.
2. At the desired location, run the thermostat cable through the hole in the center of the thermostat
mounting sub-base. Leave about three inches of wire for connections. For the correct number of
wires, see appropriate heater or control package wiring diagram and instructions.
3. Attach the sub-base directly to the wall or on a HORIZONTAL outlet box. Level the sub-base with a
spirit level.
4. Connect the wires to the sub-base following the wiring diagram. Complete installation of wiring on
the heater and/or control package. Plug the cable entrance hole to prevent drafts from affecting
thermostat operation.
5. Remove the thermostat cover by pulling up the bottom edge until it snaps free of the locking
springs. Set the heat anticipators to .25 amp. After usage, readjust as needed. The tabs along the
top inside edge fit the sockets on the upper corners of the sub-base.
6. Hang the thermostat on the sub-base and tighten the two captive screws on the thermostat base.
Replace cover by hooking cover tabs into the thermostat base and pushing down until the cover
snaps into the locking springs.
7. Restore power to heater and check for correct operation. The thermostat will, on a fall in space
temperature below its setting, energize the 2 stages of heating in sequence. On a rise in space
temperature towards the stat setting, the sequence is reversed.

Honeywell

FORM: 56621-104
ECO 1-5719

SERIES 5100

TASKMASTER
INSTALLATION INSTRUCTIONS
TASKMASTER SERIES
T5100, T5102, T5122, TC5102 AND TC5103 Built-in Thermostat Kits for Field installation in the 5100
Series Unit Heaters.
T5100

provides SPST line voltage control for single phase heaters up to 277V, 25a.
or
Pilot duty control (24-277 volt) for contactor equipped heaters.

T5102

provides double pole line voltage control breaking all ungrounded conductors for single phase
heaters up to 277V, 25 amperes.
or
Two pole line cycling control for 3 phase heaters up to 240 volts, 25 amps but does not break all
ungrounded conductors on 3 phase applications.

T5122

provides two stage low voltage (24V) control for two stage heaters. Two separate circuits are
controlled by the same sensing element. Switches controlling these circuits are calibrated to make
or break in sequence.

TC5102 is a thermostat and relay for use with 480 & 600 volt heaters to control the fan motor. It provides for
sensing of heat accumulation (strat-stat) near the ceiling and switches the fan motor on to recirculate
and recover this heat.
TC5103 provides control of the fan motor on 208, 240 & 277 volt heaters to recover and recirculate the
statified heat accumulated near the ceiling.
Please read each installation instruction carefully before beginning installation.
INSTALLATION INSTRUCTIONS T5100, T5102, T5122
1.) CAUTION:
To avoid possible electric shock, turn heater OFF at distribution panel. On heaters equipped with a
disconnect switch, rotate switch to the OFF position.
2.) Unlock the 2 screws on the control panel door and let door swing down. Some models have an
additional center door catch. Squeeze catch to open.
3.) Remove 1/2 (13mm) diameter thermostat bulb exit knockout from back of heater, Fig. 1. Feed
thermostat bulb and capillary tube thru knockout.
CAUTION: Keep capillary tubing away from internal electrical components.
4.) Remove 2 small thermostat bulb clip knockouts on the rear of the heater, see Fig. 1. Insert 2 bulb clips
(supplied). Snap thermostat bulb into clips.
5.) Remove the three stat mounting knockouts from side of control compartment: (1) 9/16 & (2) 3/16. Remove
backing from label (supplied). Align label with thermostat shaft hole and position as in Fig. 1. Press label
on heater side as shown.
6.) Note orientation of leg on thermostat bracket (see Fig. 1). Position only as shown. Install thermostat with
the (2) number 8 mounting screws provided.
FORM: 56628-005
ECO 1-5719

CLIPS

BULB

MOUNTING
SCREW
SWITCH
RELAY

FIG. 1
3.3 - 5KW

FIG. 2
3.3 - 5KW

CLIPS

BULB

BULB

FIG. 1
7 - 20KW

FIG. 1
25 - 50KW

MOUNTING
SCREW

SWITCH
RELAY

MOUNTING
SCREW

SWITCH
RELAY

FIG. 2
7 - 20KW

FIG. 2
25 - 50KW

7.) Install knob by pushing onto thermostat shaft.
8.) Connect lead wires from the thermostat to the control terminal board as shown in the wiring diagrams
located on the inside of the control panel door.
9.) Set thermostat for desired turn on temperature. Rotate thermostat knob fully clockwise. When the room
temperature has reached the comfort level turn thermostat counterclockwise until it clicks off. The
thermostat may require one or two additional settings to maintain your desired comfort level.
HEAT RECOVERY THERMOSTAT TC5102 AND TC5103
10.) The TC5102 thermostat package requires a relay to operate the fan motor. Install the thermostat by
following steps 1 through 8.
11.) Install the relay by slipping extended relay leg under mounting lip on control panel. Mount relay with one
No. 8 screw as shown in Fig. 2. Each lead wire is marked for proper terminal location; connect lead wires
as indicated on teh wiring diagram located on the inside of the control panel door.
12.) Set the thermostat for desired turn on temperature for fan control.
FORM: 56628-005
ECO 1-5719

Instructions d'Installation
SERIES TASKMASTER
Necessaires de thermostat incorpores T5100, T5102, T5122, TC5102 et TC5103 (pour etre installes sur place
les radiateurs de series 5100)
Le T5100, Unipolaire a` une direction (SPST), controle la tension de ligne pour les radiateurs monophases jusqu' a`
277V, 25A.
ou
veilleuse (24-277 volts) pour les radiateurs munis de contacteurs.
Le T5102, bipolaire controle la tension de ligne interrompant tous les conducteurs non mis a` la terre pour les
radiateurs monophases jusqu' a` 277V, 25A
ou
bipolaire a` une direction pour les radiateurs tripolaires jusqu' a` 240V, 25A mais n' interrompant pas tous
les conducteurs non mis a` la terre pour les applications triphasees.
Le T5122, a un controle basse tension (24V) a` 2 etages pour radiateur a` 2 etages. Les deux circuits sont separes
et controles par le meme element sensitif. Les interrupteurs controlant ces circuits sont calibres pour
ouvrir et fermer en serie.
Le TC5102 est un relais/thermostat qui est utilise avec des radiateurs de 480 & 600 volts pour controler le moteur
du ventilateur. Il sert a` detecter l arrivee de la chaleur (therm.de strat.) au plafond et a` faire demarrer
le moteur du ventilateur pour faire recirculer accumulation de chaleur.
Le TC5103 sert a` controler le moteur du ventilateur sur les radiateurs de 208, 240 & 277 volts pour faire recirculer
la chaleur stratifiee accumulee au plafond.
Lisez S.V.P. chaque instruction d'installation soigneusement avant de commencer l'installation.

INSTRUCTIONS D'INSTALLATION DES T5100, T5102 & T5122

1.) ATTENTION:
Afin d'eviter un choc electrique possible, mettez le radiateur a` la position ARRET au niveau du panneau de
distribution. Sur les radiateurs equippes d'un interrupteur de courant, mettez l'interrupteur a` la position ARRET.
`
2.) Desserez les deux vis situees sur la porte du panneau de controle et laissez celle-ci pendre. Quelques modeles
ont un dispositif d'arret supplementaire. Comprimez ce dispositif afin qu` il s'ouvre.
3.) Enlevez la rondelle defoncable de dia. 21" (13mm) alimentant l'ampoule du thermostat Fig. 1 afin de connecter
celle-ci par le trou ainsi fait.
ATTENTION: Gardez le tube capillaire loin des dispositifs et des fils electriques internes.
4.) Enlevez lez 2 petites rondelles defoncables pour les attaches des ampoules du thermostat a` l'arriere du radiateur,
(voir Fig. 1.) Inserez les deux attaches fournies. Agrafez les ampoules sur les attaches.
5.) Enlevez le papier du dos de l'etiquette (fournie). Alignez l'etiquette sur le trou de l'arbre du thermostat et
positionnez-la` (voir Fig. 1.) Collez l'ettiquette sur le cote du radiateur comme montre.
`
6.) Notez l'orientation de la patte sur le support du thermostat. (voir Fig. 1). Positionnez-la comme
montre seulement.
Installez le thermostat avec les 2 vis de montage No. 8 fournies.

FORM: 56628-005
ECO 1-5719

ATTACHES

AMPOULE

FIG. 1
3.3 - 5KW

FIG. 2
3.3 - 5KW

ATTACHES

AMPOULE

FIG. 1
7 - 20KW

FIG. 1
25 - 50KW

MOUNTING
SCREW

SWITCH
RELAY

FIG. 2
7 - 20KW

FIG. 2
25 - 50KW

7.) Installez le bouton en le poussant sur l'arbre du themostat.
8.) Connectez les fils conducteurs du thermostat aux bornes de controle comme montre sur les shemas de filerie
situes a l'interieur de la porte du panneau de controle.
9.) Reglez le thermostat a` la temperature desiree. Tournez le thermostat a` fond dans le sens des auqulles d'une
` a atteind le niveau desire tournez le thermostat dans le sens
montre. Lorsque la temperature de la piece
contraire des auqulles d'une montre jusqu' a` ce qu'il s'ouvre (declique). Le thermostat doit peut etre, etre regle
de noveau une a` deux fois afin de maintenir une temperature comfortable.
`
THERMOSTAT A
RECUPERATION DE CHALEUR TC5102 & TC5103
10.) Le thermostat monte TC5102 doit etre muni d'un relais afin de faire fonctionner le moteur du ventilateur. Installez
le thermostat en suivant les paragraphes de 1 a` 8.
11.) Installez le relais en glissant sa patte sous le rebord de montage du panneau de controle. Montez le relais
avec une vis No. 8 comme montre sur la Fig. 2. Chaque fil conducteur est marque pour etre connecte
correctement; Connectez les fils conducteurs comme indique sur le shema de filerie situe a` l interieur de
la porte du panneau de controle.
12.) Reglez le thermostat de nouveau pour controler le ventilateur, si vous desirez une autre temperature que
celle reglee a` la fabrique.

FORM: 56628-005
ECO 1-5719

SERIES 5100

TASKMASTER
Installation Instructions
FS5102TASKMASTER SERIES
UNIT MOUNTED LINE VOLTAGE SUMMER FAN SWITCH
FOR USE ON EITHER 480 OR 600 VOLT SUPPLY
READ THESE INSTRUCTIONS CAREFULLY BEFORE INSTALLING SWITCH. BE SURE TO DE-ENERGIZE
POWER SOURCE TO UNIT BEFORE INSTALLING SWITCH. BE SURE TO INSTALL THE APPROPRIATE
MODEL SWITCH ON THE CORRECT UNIT.
REMOVE FOR
FS5102

1.) Disconnect heater from supply.
2.) Remove appropriate knockouts for switch being used. Refer to Fig. 1.
0.875

Ø0.5625

Models 5102 thru 5105 - Fig. 2
Knockout group is located on heater back center approximately 1 1/8” (29mm)
from bottom of heater.

(14MM)

(22MM)

1.1565
(29MM)

2.3125
(59MM)

FIG. 1
Models 5107 thru 5120 - Fig. 3
Knockout group is located on heater back approximately 3 1/4” (83mm) from bottom of heater with the 9/16”
(14mm) diameter knockout located approximately 3 3/4” (95mm) to the right of the back center.

Models 5125 thru 51100 - Fig. 4
Knockout group is located on heater back approximately 1 3/4” (44mm) from bottom of heater with the 9/16”
(14mm) diameter knockout located approximately 5” (127mm) to the left of the back center.

Fig. 2

Fig. 3

Fig. 4

3.) Remove paper backing from “Fan-Heat” decal, align with large knockout hole and affix to heater back with
“Heat” toward bottom of heater.
4.) Attach switch bracket assembly to heater back with the two No. 8 sheet metal screws supplied.
5.) Push knob on switch shaft and check alignment with decal.
6.) Wire switch according to wiring diagram located on inside of heater bottom panel. Attach switch leads 7 & 9
to terminals 7 & 9 on terminal board.
7.) After installation is complete, restore power and check for proper operation.
Note: For summer fan operation only, place thermostat in OFF position.

Form 56628-008
ECO 1-5719

SERIES 5100

TASKMASTER
Installation Instructions
FS5102TASKMASTER SERIES
UNIT MOUNTED LINE VOLTAGE SUMMER FAN SWITCH
FOR USE ON EITHER 480 OR 600 VOLT SUPPLY
READ THESE INSTRUCTIONS CAREFULLY BEFORE INSTALLING SWITCH. BE SURE TO DE-ENERGIZE
POWER SOURCE TO UNIT BEFORE INSTALLING SWITCH. BE SURE TO INSTALL THE APPROPRIATE
MODEL SWITCH ON THE CORRECT UNIT.
REMOVE FOR
FS5102

1.) Disconnect heater from supply.
2.) Remove appropriate knockouts for switch being used. Refer to Fig. 1.
0.875

Ø0.5625

Models 5102 thru 5105 - Fig. 2
Knockout group is located on heater back center approximately 1 1/8” (29mm)
from bottom of heater.

(14MM)

(22MM)

1.1565
(29MM)

2.3125
(59MM)

FIG. 1
Models 5107 thru 5120 - Fig. 3
Knockout group is located on heater back approximately 3 1/4” (83mm) from bottom of heater with the 9/16”
(14mm) diameter knockout located approximately 3 3/4” (95mm) to the right of the back center.

Models 5125 thru 51100 - Fig. 4
Knockout group is located on heater back approximately 1 3/4” (44mm) from bottom of heater with the 9/16”
(14mm) diameter knockout located approximately 5” (127mm) to the left of the back center.

Fig. 2

Fig. 3

Fig. 4

3.) Remove paper backing from “Fan-Heat” decal, align with large knockout hole and affix to heater back with
“Heat” toward bottom of heater.
4.) Attach switch bracket assembly to heater back with the two No. 8 sheet metal screws supplied.
5.) Push knob on switch shaft and check alignment with decal.
6.) Wire switch according to wiring diagram located on inside of heater bottom panel. Attach switch leads 7 & 9
to terminals 7 & 9 on terminal board.
7.) After installation is complete, restore power and check for proper operation.
Note: For summer fan operation only, place thermostat in OFF position.

Form 56628-008
ECO 1-5719

SERIES 5100

TASKMASTER
Installation Instructions
FOR RADIAL DIFFUSER
MODEL RD5120
MODEL RD5150
MODEL RD5175

USE WITH 5107-5120 UNITS
USE WITH 5125-5150 UNITS
USE WITH 5155-5175 UNITS

READ THESE INSTRUCTIONS CAREFULLY BEFORE INSTALLATION. BE SURE TO
DE-ENERGIZE POWER SOURCE TO UNIT BEFORE INSTALLING DIFFUSER. CHECK MODEL
NUMBER TO INSURE INSTALLATION ON PROPER SIZE UNIT.

MOUNTING BOLT DETAIL
FRONT PANEL
OF UNIT

NYLON
PUSH NUT

STARWASHER
FLAT WASHER

MOUNTING
SCREW

1.) Disconnect heater from supply.
2.) Immerse nylon push nuts in water for at least 1/2 hour before installing.
3.) Remove louver frame assembly from front of heater and discard. (Louver frame assembly is
attached to the heater front with four sheet-metal screws.)
4.) Insert the four nylon push nuts provided into the square holes located around the venturi
opening on the heater front. A slight tap with a flat surface may be required to fully seat the
nylon push nuts into the square holes.
5.) Assemble the star washers and flat washers provided onto each of the mounting screws
as shown.
6.) Line up the diffuser mounting holes with the nylon push nuts mounted in the heater front
(step 2). Insert the mounting screws (step 3) through the diffuser mounting eyelets and
tighten screws.
7.) Adjust the diffuser vanes for desired air deflection.
8.) Restore power to place heater in operation.
FORM: 56628-011
ECO 1-5719

SERIES 5100

TASKMASTER
INSTALLATION INSTRUCTIONS
ANEMOSTAT DIFFUSER TASKMASTER SERIES
MODEL AD5120
USE WITH 5107-5120 UNITS
MODEL AD5150
USE WITH 5125-5150 UNITS
MODEL AD5175
USE WITH 5155-5175 UNITS
READ THESE INSTRUCTIONS THOROUGHLY BEFORE INSTALLING DIFFUSER. BE SURE TO
DE-ENERGIZE POWER SOURCE TO UNIT BEFORE INSTALLING DIFFUSER. CHECK MODEL
NUMBER OF DIFFUSER TO INSURE INSTALLATION ON PROPER SIZE UNIT.
VENTURI
RING

VENTURI
RING

LOCKWASHER

LOCKWASHER

MACHINE
SCREW

MACHINE
SCREW
NUT

NUT

DIFFUSER

DIFFUSER

FIG. 1

FIG. 2

For Heaters 5107-5110 Use Diffuser AD5120 - See Fig. 1
For Heaters 5125-5150 Use Diffuser AD5150 - See Fig. 1
For Heaters 5155-5175 Use Diffuser AD5175 - See Fig. 1
1.) Discard 1/4-20 X 1/2” (13mm) long machine screws (bag assembly).
2.) Line up holes in diffuser and the venturi ring on the heater front.
3.) Insert the 1/4-20 x 1” (25mm) long machine screws through the venturi ring holes with the
machine screw head on the inside of the venturi (See Note Below).
4.) Slip the spacer (1/4”(6mm) for models 5155-5175 and 5/8”(16mm) for all others listed above)
over the machine screw. Insert the machine screw through the diffuser hole, install the
lockwasher, nut; then tighten. (See detail above). (Three places)
5.) Place heater in operation.
For Heaters 5112-5120 Only Use Diffuser AD5120 - See Fig. 2
1.) Discard 1/4-20 X 1” (25mm) long machine screws and 5/8” (16mm) long spacers.
2.) Line up holes in diffuser and venturi ring (heater front).
3.) Insert 1/4-20 x 1/2” (13mm) long machine screws through venturi ring and diffuser holes with the
machine screw head on the inside of the venturi (See Note Below).
4.) Attach the lockwasher, nut and tighten. (See detail above) (Three places).
5.) Place unit in operation.
NOTE
1.) Machine screw heads must be on the inside of the venturi ring.
2.) Caution must be exercised when mounting the diffuser so as not to damage the fan blade.
FORM: 56628-012
ECO 1-5719



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